1、UDC 621.9-229.31 : 629.4.027.1 1 DEUTSCHE NORM June 1990 c m m L Centre holes for rail vehicle axles DIN - 332 Part 4 Zentrierbohrungen fr Radsatzwellen von Schienenfahrzeugen Supersedes March 1977 edition. In keeping with current practice in standards published by the International Organization for
2、 Standardization (ISO), a comma has been used throughout as the decimal marker: Dimensions in mm 1 Scope and field of application This standard specifies centre holes for rail vehicle axles designed for a wheelset load 1) of up to 2000 kg. 2 Dimensions and designation Centre holes shall be produced
3、to a surface roughness of ,/m (Jm). Type H1 Type K1, with protective chamfern) Designation of a type H1 centre hole: Centre hole DIN 332 - H1 3 Indications on drawings See DIN 332 Part 10 for indication of centre holes on engineering drawings. 1) Wheelset load is understood to include the mass of al
4、l components mounted on the axle. 2) This type is to be used for axles provided with a protective cap. Continued on page h Verlag GmbH. Berlin. has the exclusive right of sale for German Standards (DIN-Normen) DIN 332 Part 4 Engl. Price group Sales No. O105 Page 2 DIN 332 Part 4 Standard referred to
5、 DIN 332 Part 10 Centre holes; indications on drawings Other relevant standards DIN 5575 DIN 5576 DIN 34 31 1 Rail vehicles; freewheel sets with outside-journal axles for coaches; main dimensions Rail vehicles; outside-journal axles; tolerances, transition design and finish Holes for centring pins i
6、n hollow axles of wheelsets Previous editions DIN 332 Part 4: 02.43, 04.46, 10.56, 02.61,07.64, 03.77. Amendments The following amendments have been made to the March 1977 edition. a) Types G and J centre holes are no longer included, type Hl has been substituted for H and type K1 for K. b) Some dim
7、ensions have been amended and the relevant tolerances added. c) The standard has been editorially revised and brought into line with the state of the art. d) A reference to DIN 332 Part 1 O has been substituted for an example of indication on drawings. Explanatory notes This standard has been prepar
8、ed by Technical Committee 4 Baufeile und Konstruktionsrichtlinien of the Normenausschu Schienenfahrzeuge (Rail Vehicles Standards Committee). The revision of this standard was prompted by the necessity to harmonize it with other relevant standards, as listed above. For types Hand K (now H1 and Ki) centre holes, the centre hole has been specified so as to ensure both proper accommodation of the centrepoint and to permit the hole to be produced by only one tool . International Patent Classification B 61 F 5/00 6 61 F 15/00
